{"title":"Records on 1900-04-21","description":"Every record set or tied on 1900-04-21.","dataAsOf":"2026-10-17T00:00:00Z","lastRevised":"2026-10-18","source":"Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products.","licence":"US Government open data (NOAA NCEI)","page":"https://worldextremeweathermonitor.com/records/1900-04-21/","columns":[{"name":"id","description":"Stable record id: station, date, type and timescale."},{"name":"station_id","description":"GHCN-Daily station id."},{"name":"station_name","description":"Station name."},{"name":"country","description":"ISO 3166 alpha-2 country code."},{"name":"type","description":"Record type: tmax_high, tmax_low, tmin_high, tmin_low, prcp_high, snow_high or snwd_high."},{"name":"timescale","description":"daily, monthly or all-time."},{"name":"date","description":"Date the record was set, YYYY-MM-DD."},{"name":"value","description":"Record value in degrees Celsius or millimetres."},{"name":"unit","description":"c for degrees Celsius, mm for millimetres."},{"name":"previous_value","description":"The record it replaced, in the same unit. Empty for a first record."},{"name":"previous_date","description":"Date of the replaced record."},{"name":"margin","description":"How far the new value beat the old record, a non negative magnitude in the same unit. Zero for a tie."},{"name":"years_stood","description":"Whole years the replaced record had stood."},{"name":"significance","description":"Record Significance Score from 0 to 100 (see /methodology/)."},{"name":"tie","description":"True when the value tied the record."},{"name":"provisional","description":"True while the record is inside the 60 day provisional window."},{"name":"lat","description":"Station latitude in decimal degrees."},{"name":"lon","description":"Station longitude in decimal degrees."}],"rows":[{"id":"UK000047811-1900-04-21-tmax_high-daily","station_id":"UK000047811","station_name":"Armagh","country":"GB","type":"tmax_high","timescale":"daily","date":"1900-04-21","value":19.6,"unit":"c","previous_value":17.9,"previous_date":"1845-04-21","margin":1.7,"years_stood":54,"significance":27,"tie":false,"provisional":false,"lat":54.35,"lon":-6.65},{"id":"EI000003969-1900-04-21-tmax_high-daily","station_id":"EI000003969","station_name":"Dublin Phoenix Park","country":"IE","type":"tmax_high","timescale":"daily","date":"1900-04-21","value":20.4,"unit":"c","previous_value":17.7,"previous_date":"1869-04-21","margin":2.7,"years_stood":30,"significance":20,"tie":false,"provisional":false,"lat":53.3639,"lon":-6.3192},{"id":"UK000056225-1900-04-21-tmax_high-daily","station_id":"UK000056225","station_name":"Oxford","country":"GB","type":"tmax_high","timescale":"daily","date":"1900-04-21","value":22.9,"unit":"c","previous_value":21.9,"previous_date":"1865-04-21","margin":1,"years_stood":34,"significance":20,"tie":false,"provisional":false,"lat":51.7667,"lon":-1.2667},{"id":"GM000004204-1900-04-21-tmax_high-daily","station_id":"GM000004204","station_name":"Jena Sternwarte","country":"DE","type":"tmax_high","timescale":"daily","date":"1900-04-21","value":26.4,"unit":"c","previous_value":23.7,"previous_date":"1885-04-21","margin":2.7,"years_stood":14,"significance":16,"tie":false,"provisional":false,"lat":50.9267,"lon":11.5842},{"id":"AU000005901-1900-04-21-tmin_high-daily","station_id":"AU000005901","station_name":"Wien","country":"AT","type":"tmin_high","timescale":"daily","date":"1900-04-21","value":11.7,"unit":"c","previous_value":11,"previous_date":"1872-04-21","margin":0.7,"years_stood":27,"significance":14,"tie":false,"provisional":false,"lat":48.2331,"lon":16.35},{"id":"GME00127462-1900-04-21-tmax_high-daily","station_id":"GME00127462","station_name":"Putbus","country":"DE","type":"tmax_high","timescale":"daily","date":"1900-04-21","value":21,"unit":"c","previous_value":20,"previous_date":"1870-04-21","margin":1,"years_stood":29,"significance":14,"tie":false,"provisional":false,"lat":54.3656,"lon":13.4783},{"id":"GME00125218-1900-04-21-tmax_high-daily","station_id":"GME00125218","station_name":"Leipzig-Holzhausen","country":"DE","type":"tmax_high","timescale":"daily","date":"1900-04-21","value":22.3,"unit":"c","previous_value":22,"previous_date":"1885-04-21","margin":0.3,"years_stood":14,"significance":7,"tie":false,"provisional":false,"lat":51.3164,"lon":12.4475}]}